<template>
  <div class="login-container">
    <div class="title">
      <img :src="logoUrl" class="logo" style="vertical-align: middle">
      <h3 style="display: inline-block;">智能管理系统</h3>
    </div>
    <wx-login v-if="isWxLogin" :appid="wxLoginParams.appid" :redirect-uri="wxLoginParams.redirectUri"/>
    <el-form v-if="!isWxLogin" ref="loginForm" :model="loginForm" :rules="loginRules" class="login-form" auto-complete="on" label-position="left">
      <div>
        <el-form-item prop="username">
          <span class="svg-container svg-container_login">
            <svg-icon icon-class="user" />
          </span>
          <el-input v-model="loginForm.username" name="username" type="text" auto-complete="on" clearable placeholder="请输入登录账号" />
        </el-form-item>
        <el-form-item prop="password">
          <span class="svg-container">
            <svg-icon icon-class="password" />
          </span>
          <el-input
            :type="pwdType"
            v-model="loginForm.password"
            name="password"
            auto-complete="on"
            placeholder="请输入登录密码"
            clearable
            @keyup.enter.native="handleLogin" />
          <span class="show-pwd" @click="showPwd">
            <svg-icon icon-class="eye" />
          </span>
        </el-form-item>
        <el-form-item prop="captcha" width="80%" >
          <span class="svg-container">
            <svg-icon icon-class="user" />
          </span>
          <el-input v-model="loginForm.captcha" maxlength="4" name="captcha" type="text" style="width: 75%;" placeholder="请输入验证码"/>
          <span style="display:inline-block;">
            <img :src="captchaUrl" style="vertical-align: middle;cursor: pointer;" @click="captcha">
          </span>
        </el-form-item>
        <el-form-item>
          <el-button :loading="loading" type="primary" style="width:100%;" @click.native.prevent="handleLogin">
            登录
          </el-button>
        </el-form-item>
      </div>
    </el-form>
    <div>
      <el-button class="wechat" style="width:48px;margin: 0 auto;" type="text" @click="switchLoginStyle">{{ loginStyleMap[loginStyle] }}</el-button>
    </div>
  </div>
</template>
<script>
import wxLogin from '@/components/wxLogin/index'
export default {
  name: 'Login',
  components: {
    wxLogin
  },
  data() {
    return {
      isWxLogin: true,
      loginStyle: 'account',
      loginStyleMap: { wx: '微信登录', account: '账号登录' },
      loginForm: {
        username: 'admin',
        password: '123456',
        captcha: '1234'
      },
      loginRules: {
        username: [
          { required: true, message: '登录账号不能为空', trigger: 'blur' },
          { min: 5, max: 20, message: '登录账号长度在 5 到 20 个字符', trigger: 'blur' }
        ],
        password: [
          { required: true, message: '密码不能为空', trigger: 'blur' },
          { min: 6, max: 20, message: '密码长度在 6 到 20 个字符', trigger: 'blur' }
        ],
        captcha: [
          { required: true, message: '验证码不能为空', trigger: 'blur' },
          { min: 4, max: 4, message: '验证码必须是4位', trigger: 'blur' }
        ]
      },
      loading: false,
      pwdType: 'password',
      redirect: undefined,
      captchaUrl: 'http://insp.bayes-tech.com/captcha-image.html',
      wxLoginParams: {
        appid: 'wx05c39a62c06201ef',
        redirectUri: 'http%3a%2f%2fmina.bayes-tech.com'
      }
    }
  },
  computed: {
    logoUrl: () => {
      return process.env.LOGO_URL
    }
  },
  watch: {
    $route: {
      handler: function(route) {
        this.redirect = route.query && route.query.redirect
      },
      immediate: true
    }
  },
  methods: {
    switchLoginStyle() {
      this.loginStyle = this.isWxLogin ? 'account' : 'wx'
      this.isWxLogin = !this.isWxLogin
    },
    captcha() {
      this.captchaUrl =
        'http://insp.bayes-tech.com/captcha-image.html?random=' + new Date()
    },
    showPwd() {
      if (this.pwdType === 'password') {
        this.pwdType = ''
      } else {
        this.pwdType = 'password'
      }
    },
    handleLogin() {
      this.$refs.loginForm.validate(valid => {
        if (valid) {
          this.loading = true
          this.loginForm.username = this.loginForm.username.trim()
          this.loginForm.password = this.loginForm.password.trim()
          this.$store
            .dispatch('LOGIN', this.loginForm)
            .then(() => {
              this.loading = false
              this.$router.push({ path: this.redirect || '/' })
            })
            .catch(() => {
              this.loading = false
            })
        } else {
          return false
        }
      })
    }
  }
}
</script>

<style rel="stylesheet/scss" lang="scss">
$bg: #2d3a4b;
$light_gray: #eee;

/* reset element-ui css */
.login-container {
  .el-input {
    display: inline-block;
    height: 47px;
    width: 85%;
    input {
      background: transparent;
      border: 0px;
      -webkit-appearance: none;
      border-radius: 0px;
      padding: 12px 5px 12px 15px;
      color: $light_gray;
      height: 47px;
      &:-webkit-autofill {
        -webkit-box-shadow: 0 0 0px 1000px $bg inset !important;
        -webkit-text-fill-color: #fff !important;
      }
    }
  }
  .el-form-item {
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(0, 0, 0, 0.1);
    border-radius: 5px;
    color: #454545;
  }
}
</style>

<style rel="stylesheet/scss" lang="scss" scoped>
$bg: #2d3a4b;
$dark_gray: #889aa4;
$light_gray: #eee;
.login-container {
  position: fixed;
  height: 100%;
  width: 100%;
  background-color: $bg;
  .login-form {
    // position: absolute;
    left: 0;
    right: 0;
    width: 520px;
    max-width: 100%;
    padding: 0 35px 15px 35px;
    margin: 0 auto;
  }
  // .tips {
  //   font-size: 14px;
  //   color: #fff;
  //   margin-bottom: 10px;
  //   span {
  //     &:first-of-type {
  //       margin-right: 16px;
  //     }
  //   }
  // }
  .svg-container {
    padding: 6px 5px 6px 15px;
    color: $dark_gray;
    vertical-align: middle;
    width: 30px;
    display: inline-block;
    &_login {
      font-size: 20px;
    }
  }
  .title {
    font-size: 26px;
    font-weight: 400;
    color: $light_gray;
    margin: 10% auto 40px auto;
    text-align: center;
    font-weight: bold;
    vertical-align: middle;
  }
  .show-pwd {
    position: absolute;
    right: 10px;
    top: 7px;
    font-size: 16px;
    color: $dark_gray;
    cursor: pointer;
    user-select: none;
  }
}
.wechat {
  cursor: pointer;
  color: $light_gray;
  font-size: 12px;
  display: block;
}
.logo {
  width: 60px;
  height: 60px;
  margin-right: 20px;
}
</style>
